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I was told by the operative that SSE would fit isolators but only if asked to do so.

But from a comparative point of view you would have to say the the standard ones are 1 3/8 times longer than the stubby.

Put mortar or plaster into the back box hole and use an old back box pushed and wiggled into place to get a reasonable surface, then remove the back box and touch up any big gaps. If you are feeling posh you could put a plastic bag pulled tight over the back box to stop the mortar squeezing into...

From the 1st july onward. You can pre-order now from various places for delivery as soon as it is available.

Yes, I have used those at times, no real problems with them but to gland SWA you then need to buy the additional earth clamp bar (just below on the page) which significantly adds to the cost of an already expensive junction box. I tend to prefer to use junction boxes that have enough space to...

Possibly I am not following but if you walked into your lounge would you think "why is there no CU in here, there is one in the hall?" If not then why would you think there should be a CU in another room, albeit one that is outside. It may be necessary for convenience to be able to isolate...

As a general rule any given power supply is designed for the intended load and, unless there is an obvious reason to overspec the supply, will be at least reasonably close to the limits of the circuits. In a domestic situation this may not be the case quite so much but for garden supplies...

I am on metered water and use about 10m³ water per year and my bills are about £80 per year.  The majority of this is standing charges.

I think mine is being environmentally friendly and only running at low power, perhaps I have an LED brain! :)

Sequential operations to carry out "0.05" "x" "6" "±" "10^x" "x" "100000" "x" "π" "x" "2" "=" "M+" "1" "/" "MR" "=" 31.83

Adjusting to 216V, isn't that what Cmin is doing already!!

Welcome. I would suggest that perhaps this was a global test on all those circuits at once and the single item of failure therefore shows up on all circuits. The result for LN cannot be correct if all items were not disconnected from the circuits and the ones to earth are very unlikely to be...

There does not appear to be a phosphor coating so fluorescent is out unless the phosphor is very worn. I cannot tell if there is a wire inside the tube, in which case it could be an incandescent. Without a wire or phosphor coating it would have to be a neon or discharge lamp, but then that...

I am not sure what the standard service illumination is, however the service illumination is the light intensity after the light fitting has been used for a while and this is what I showed above, the use of the maintenance factor provides this value. This is calculating the Lux for the room...

A classroom might be expected to need a lux level of about 400 lux on the working plane. The lux level of an area can be roughly calculated from E = F x UF x MF / A, where Lux at the working plane is E, F is lumens from a light fitting,  UF utilisation factor, MF maintenance factor or light...

A 30W, 2.5A 12V LED driver would be the simplest choice as these are readily available for about £10.  Any 12V LED driver of higher wattage should also work. If you are using it in a light box then you may find you have to check the dimensions of the driver to ensure it will fit and that there...

The power is 60W per 5m therefore 12W /m max current is given as 1.2A/m Voltage is given as 12V from the power supply required. So max watts per m perhaps 14W. Therefore to power a 2m strip you would need a 12V, at least 28W (i.e. probably 30W), constant voltage power supply.

I believe the general DNO approach is that <=3m is acceptable, though quite often long tails are installed in new builds and different DNOs may have different standards I am sure one of them has 4m as the maximum length. Section 433 mentions 3m as a maximum distance so long as the cables...

To seal a loose fibre asbestos by spraying a sealant on to it, whilst it would help for the future, would not be safe because the spray would, at the time of use, distribute fibres into the air. Painting a sealant on to an asbestos surface is less hazardous, but could still come with risks...

I hope it works OK. You will be powering the module all the time but not the indicator. I have to ask because I am not so hot on electronics how the parallel capacitor and LED would work if you are using dc. The way I see it the capacitor will quickly charge and then stop conducting; so the...